Die Einheit befasst sich weiterhin mit den Folgen von Olinskys Tod. Voight wird suspendiert, weil er den Verdächtigen im Mordfall Olinsky kaltblütig erschossen hat. Die Ermittler untersuchen eine Reihe von Überdosen mit gestrecktem Heroin. Ruzek hat einen Konflikt mit Dawson, als dieser die Leitung der Einheit übernimmt. Die Beamten nehmen an Olinskys Beerdigung teil, während Voight aus der Ferne zuschauen muss.

Nachdem sie die wahre Ursache des Hochhausfeuers entdeckt haben, beginnt für die Intelligence ein Wettlauf gegen die Zeit, um den Verantwortlichen zu finden.

Das Crossover beginnt bei "Chicago Fire" 7x02 ("Inferno", 1/3) und "Chicago Med" 4x02 ("Außer Atem", 2/3).

Politics get in the way as the team tries to rescue a teenage girl kidnapped by a robbery crew. Voight and Platt try to exonerate Olinsky.

A ride along goes sideways, and Burgess is faced with a difficult choice: follow the advice of Voight, or a potential new ally.

While undercover, Ruzek discovers his father is working for a suspected drug dealer and is forced to ask the question: is his dad involved?

Die Frau eines Stadtrates wird erschlagen, und First Deputy Superintendent Brennan setzt Voight unter Druck, den Fall schnell abzuschließen.

Intelligence suspects the leader of a local mosque is behind the bombing of an Army recruitment station. After a second explosion, Voight urges Halstead to follow the facts and not let his time in the service cloud his judgment.

While CPD tries to take down a drug kingpin, Atwater faces a tough choice between doing what’s required to solve the murder of a young dealer and what’s best for the community.

In an attempt to dig himself out of a hole and save someone close to him, Antonio crosses a line that puts the entire team at risk.

Intelligence crosses with a mayoral candidate while investigating the fatal shooting of a well-known defense attorney. Antonio returns to work but questions his own judgment when an operation goes sideways.

While chasing a heroin supplier, CPD crosses paths with a convicted criminal recently released on a technicality. Halstead's history with the man threatens the team's ability to put him back in prison.

Atwater goes undercover to bring down the longtime head of a criminal enterprise and becomes entangled in a situation that tests his allegiances as well as his conscience.

Upton and Burgess find themselves in a difficult situation when Intelligence tracks a cache of cop killer machine guns to a local gun show in Wisconsin.

Using information from Chicago Fire's Cruz, Intelligence chases down the robbery crew that’s been using the lockbox key. Voight is under pressure to bring the crew to justice without tarnishing the reputation of a murdered firefighter who might have been involved.

The crossover starts on Chicago Fire S07E15 What I Saw (I).

Voights „stay out of politics“ Haltung wird in Frage gestellt, als die Details um einen fruchtbaren Serienmörder aufgedeckt werden.

A mayoral candidate is shot by an unidentified sniper, and Intelligence races to catch the shooter before he can take out his next target.

With the threat of a gang war looming, Voight and Ray Price must organize a peace summit to end the bloodshed before more innocent people get hurt. Burgess evaluates her future with Blair.

Intelligence's investigation into the murder of Burgess' boyfriend threatens to reveal a dark side she was unaware of. The real motivation for his murder uncovers a much more unsettling truth.

A violent crew is hitting pharmaceutical delivery trucks and stealing drugs, but their motivation is more complicated than just money. The case tests Upton and Ruzek’s relationship.

Antonio struggles with his guilty conscience as he tries to take down a major drug dealer. In order to protect his team, Voight takes a big shot at Kelton.

With Kelton’s election all but assured, Voight and his team must go off book in a last-ditch effort to save Intelligence from getting axed.